Ingredients:
For the Sponge:
- 350 g Butter or baking spread
 - 350 g Caster sugar
 - 6 Large eggs
 - 2 tsp Orange extract
 - 1 tbsp Milk
 - 300 g Self-raising flour
 - 50 g Cocoa powder
 - 1/2 tsp Baking powder
 
For the Buttercream:
- 250 g Butter or baking spread
 - 450 g Icing sugar
 - 50 g Cocoa powder
 - 1 1/2 tbsp Milk
 - 2 tsp Orange extract
 
For Decoration:
- 1 Terry’s Chocolate Orange
 - Orange sprinkles (optional)
 
Instructions:
- Preheat Oven and Prepare Tins:
 
- Preheat your oven to 160°C Fan/180°C/350°F/Gas Mark 4.
 - Grease and line two 8″ cake tins.
 
- Make the Sponge:
 
- In a large bowl, mix the butter and caster sugar with a spoon until fluffy, or use an electric mixer.
 - Add the eggs, orange extract, and milk. Whisk until fully incorporated.
 - Add the self-raising flour, cocoa powder, and baking powder. Whisk until the batter is smooth and you can’t see any flour.
 - Divide the mixture evenly between the prepared tins. Use scales for accuracy.
 - Bake for 30-35 minutes or until a skewer inserted in the middle comes out clean.
 - Leave the cakes to cool completely, either in the tins or on cooling racks after removing them from the tins.
 
- Make the Buttercream:
 
- In a bowl, mix the butter, cocoa powder, and icing sugar. Once it starts to come together, add the orange extract and milk.
 - Mix until smooth. An electric hand whisk is ideal, but you can also do this by hand with a spoon.
 
- Assemble the Cake:
 
- If the cakes have domed on top, level them with a cake leveller or a serrated knife.
 - Place one sponge on your plate or cake stand. Pipe or spread some of the buttercream on it.
 - Place the second sponge on top and pipe or spread the remaining buttercream over the top.
 - Decorate with pieces of Terry’s Chocolate Orange and orange sprinkles, if using.
 
- Serve and Store:
 
- Leftovers will keep in an airtight container in a cool place for 2-3 days.
 
Enjoy your delicious One-Bowl Chocolate Cake with Mocha Buttercream!
Recipe Card

One-Bowl Chocolate Cake with Mocha Buttercream
Ingredients
For the Sponge:
- – 350 g Butter or baking spread
 - – 350 g Caster sugar
 - – 6 Large eggs
 - – 2 tsp Orange extract
 - – 1 tbsp Milk
 - – 300 g Self-raising flour
 - – 50 g Cocoa powder
 - – 1/2 tsp Baking powder
 
For the Buttercream:
- – 250 g Butter or baking spread
 - – 450 g Icing sugar
 - – 50 g Cocoa powder
 - – 1 1/2 tbsp Milk
 - – 2 tsp Orange extract
 
For Decoration:
- – 1 Terry’s Chocolate Orange
 - – Orange sprinkles optional
 
Instructions
Preheat Oven and Prepare Tins:
- – Preheat your oven to 160°C Fan/180°C/350°F/Gas Mark 4.
 - – Grease and line two 8″ cake tins.
 
Make the Sponge:
- – In a large bowl, mix the butter and caster sugar with a spoon until fluffy, or use an electric mixer.
 - – Add the eggs, orange extract, and milk. Whisk until fully incorporated.
 - – Add the self-raising flour, cocoa powder, and baking powder. Whisk until the batter is smooth and you can’t see any flour.
 - – Divide the mixture evenly between the prepared tins. Use scales for accuracy.
 - – Bake for 30-35 minutes or until a skewer inserted in the middle comes out clean.
 - – Leave the cakes to cool completely, either in the tins or on cooling racks after removing them from the tins.
 
Make the Buttercream:
- – In a bowl, mix the butter, cocoa powder, and icing sugar. Once it starts to come together, add the orange extract and milk.
 - – Mix until smooth. An electric hand whisk is ideal, but you can also do this by hand with a spoon.
 
Assemble the Cake:
- – If the cakes have domed on top, level them with a cake leveller or a serrated knife.
 - – Place one sponge on your plate or cake stand. Pipe or spread some of the buttercream on it.
 - – Place the second sponge on top and pipe or spread the remaining buttercream over the top.
 - – Decorate with pieces of Terry’s Chocolate Orange and orange sprinkles, if using.
 
Serve and Store:
- – Leftovers will keep in an airtight container in a cool place for 2-3 days.
 - Enjoy your delicious One-Bowl Chocolate Cake with Mocha Buttercream!